document.write( "Question 332489: I need an equation which models how old, in years, you will be when you are 3 times as old as the younger person. Ages: 42 and 15
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Algebra.Com's Answer #238295 by ankor@dixie-net.com(22740)\"\" \"About 
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I need an equation which models how old, in years, you will be when you are 3
\n" ); document.write( " times as old as the younger person. Ages: 42 and 15
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\n" ); document.write( "Let x = no. of years ago when 42 yr old was 3 times 15 yr old
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\n" ); document.write( "42 - x = 3(15 - x)
\n" ); document.write( "42 - x = 45 - 3x
\n" ); document.write( "-x + 3x = 45 - 42
\n" ); document.write( "2x = 3
\n" ); document.write( "x = 1.5 yrs ago
\n" ); document.write( "then
\n" ); document.write( "he will be 42 - 1.5 = 40.5 yrs old
\n" ); document.write( "and
\n" ); document.write( "child will be 15 - 1.5 = 13.5 yrs
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\n" ); document.write( "Check: 3(13.5) = 40.5 \n" ); document.write( "
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